CN105978171A - Layout method for coils of wireless power supply and communication multiplexing system - Google Patents

Layout method for coils of wireless power supply and communication multiplexing system Download PDF

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Publication number
CN105978171A
CN105978171A CN201610423366.9A CN201610423366A CN105978171A CN 105978171 A CN105978171 A CN 105978171A CN 201610423366 A CN201610423366 A CN 201610423366A CN 105978171 A CN105978171 A CN 105978171A
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CN
China
Prior art keywords
coil
energy
communication
wireless power
layout method
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610423366.9A
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Chinese (zh)
Inventor
周岩
朱翔
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing Post and Telecommunication University
Nanjing University of Posts and Telecommunications
Original Assignee
Nanjing Post and Telecommunication University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nanjing Post and Telecommunication University filed Critical Nanjing Post and Telecommunication University
Priority to CN201610423366.9A priority Critical patent/CN105978171A/en
Publication of CN105978171A publication Critical patent/CN105978171A/en
Pending legal-status Critical Current

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Classifications

    • H02J7/025
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00Adaptations of transformers or inductances for specific applications or functions
    • H01F38/14Inductive couplings

Abstract

The invention discloses a layout method for coils of a wireless power supply and communication multiplexing system. The multiplexing system comprises a transmitting circuit, an energy transmitting coil, an energy receiving coil and a communication coil, wherein the resonant frequency point of the energy receiving coil is consistent to the fundamental wave signal frequency point in the energy transmitting coil; the resonant frequency point of the communication antenna is consistent to the harmonic signal frequency point in the energy transmitting coil; in the aspect of space layout, the axle wire of the communication coil is perpendicular to the tangent line of the energy receiving coil; and the energy receiving coil and the communication coil are arranged on the same plane. According to the layout method, magnetic shielding to an information channel is not required; communication with relatively high signal to noise ratio can be obtained; the size and the cost of the system are greatly lowered; and therefore, the layout method has a bright application prospect.

Description

A kind of wireless power and the multiplex system coil layout method that communicates
Technical field
The present invention designs a kind of wireless power and the multiplex system coil layout method that communicates, and belongs to wireless power and the communications field.
Background technology
Along with intelligent independent navigation equipment, portable electric appts universal, the equipment directly utilizing wireless power technology has been widely used for the various aspects of people's productive life.
Along with the intelligence degree of electronic equipment is more and more higher, required energy consumption is the most increasing, it is therefore desirable to be continuously replenished charging.It is also required to during charging equipment is communicated simultaneously, improves intelligent level further.And from volume and the consideration of cost, utilize the wireless module such as bluetooth, gsm module individually to build communication information source and receive certain restriction.For low cost, small size wireless charging device should the problem such as considering cost, service efficiency.In energy transmitting coil, flow through non-sinusoidal waveform electric current, utilize wherein harmonic energy to realize radio communication and solve communication information source.Realize wireless power for wireless power with the multiplex system that communicates utilizes first-harmonic energy in energy transmitting coil, utilize harmonic energy to realize the scheme of radio communication, such as a kind of high-speed radio portable communications system disclosed in patent 201510130932.2.
But there is the strongest electromagnetic interference between communication coil and energy receiving coil, it is therefore desirable to fully combine the operating characteristic of energy transmitting coil, the space layout method that research is applicable between low cost, high power density occasion coil.
Summary of the invention
In order to obtain high s/n ratio communication, promote the reliability of signal of communication, the present invention provides a kind of wireless power and the multiplex system coil layout method that communicates, the shortcoming interfered with communication coil with energy receiving coil in the multiplex system that communicates for wireless power, by the fundamental frequency in rational space layout, effectively suppression energy receiving coil to the interference of signal of communication in communication coil.The present invention is characterized in that without communication channel provides the means such as magnetic shield, can obtain high s/n ratio communication, have broad application prospects.
The present invention solves above-mentioned technical problem by the following technical solutions:
The present invention provides a kind of wireless power and the multiplex system coil layout method that communicates, this multiplex system includes countdown circuit, energy transmitting coil, energy receiving coil, communication antenna, wherein, described energy transmitting coil is under the effect of countdown circuit, there is provided wireless power energy for energy receiving coil, provide communication information energy for communication antenna simultaneously;Energy receiving coil accepts the fundamental signal energy in energy transmitting coil;Communication antenna accepts the harmonic signal energy in energy transmitting coil.The resonant frequency point of energy receiving coil is consistent with fundamental signal Frequency point in energy transmitting coil, and the resonant frequency point of communication antenna is consistent with harmonic frequency signal point in energy transmitting coil;In space layout, the axis of communication coil is vertical with the tangent line of energy receiving coil, and energy receiving coil and communication coil are in approximately the same plane.
As the further prioritization scheme of the present invention, energy transmitting coil is sandwich wound coil.
As the further prioritization scheme of the present invention, energy transmitting coil is spiral winding.
As the further prioritization scheme of the present invention, energy acceptance coil is sandwich wound coil.
As the further prioritization scheme of the present invention, energy acceptance coil is spiral winding.
As the further prioritization scheme of the present invention, described energy transmitting coil, under the effect of countdown circuit, produces non-sinusoidal current ripple.
The present invention uses above technical scheme compared with prior art, has following technical effect that
The present invention has that circuit volume is little, the advantage of low cost, by rational space layout, ensure that energy transmitting coil and energy receiving coil, communication coil all can produce preferable magnetic coupling, communication antenna and energy receiving coil reduce magneto-coupling effect in space layout, realize high s/n ratio communication, prevent the energy receiving coil electromagnetic interference to communication coil.
Accompanying drawing explanation
Fig. 1 is the preferred embodiments of the present invention principle framework schematic diagrams.
Fig. 2 is the preferred embodiments of the present invention disc type energy transmitting coil 3 d-space field vector scattergrams.
Fig. 3 is energy receiving coil and the experimental waveform of communication coil of the preferred embodiments of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings technical scheme is described in further detail:
As it is shown in figure 1, which show the preferred embodiments of the present invention principle framework figure.Energy transmitting coil can be sandwich wound coil or spiral winding, and under the effect of countdown circuit, it flows through non-sinusoidal current wave.Preferable magnetic coupling is all produced, as shown in the dotted arrow line in Fig. 1 between magnetic field and energy receiving coil and communication coil that energy transmitting coil current wave is excited.Energy receiving coil can be sandwich wound coil or spiral winding, and its resonant frequency point is consistent with the fundamental current frequency point of non-sinusoidal current ripple in energy transmitting coil, it is achieved wireless power transmission.Communication coil can be sandwich wound coil or spiral winding, and its resonant frequency point is consistent with the harmonic current Frequency point of non-sinusoidal current ripple in energy transmitting coil, solves the information source energy of signal of communication.When energy transmitting coil flowing through power frequency and changing according to baseband signal, information can be transmitted.Due to communication coil and energy receiving coil very close to, in layout, therefore ensure that the axis of communication antenna is vertical with the tangent line of energy receiving coil, and energy receiving coil and communication coil be in approximately the same plane.Thus can ensure that the weak magnetic coupling between communication coil and energy receiving coil, as shown in the solid arrow line in Fig. 1.
The embodiment of the present invention as shown in Figure 2 flows through in disc type energy transmitting coil the magnetic line of force spatial distribution map that non-sinusoidal current is excited.Produced stronger magnetic field by the axis of energy transmitting coil shown in figure, the most centered by axis, produce abundant scattered magnetic flux in space.Meanwhile, the horizontal plane of disc type energy transmitting coil with its produced by the magnetic line of force vertical.After energy receiving coil is excited faradic current, produced space magnetic field is similar with the space magnetic field of energy transmitting coil.Only having space layout the most as shown in Figure 1, guarantee energy transmitting coil all can produce preferable magnetic coupling with energy receiving coil, communication coil between visible coil, communication antenna and energy receiving coil reduce magneto-coupling effect in space layout.Such layout has the preferable wireless power ability of generation and wireless communication ability, it is achieved high s/n ratio communication.
As it is shown on figure 3, which show the experimental waveform of the embodiment of the present invention.Energy receiving coil flows through fundamental current, flows through 3 subharmonic currents in communication coil, it is seen that 3 subharmonic currents are little affected by fundamental frequency impact, lay a solid foundation for realizing high s/n ratio communication.
The design parameter of the preferred embodiment of the present invention is as follows:
Energy transmitting coil flows through the delta current ripple of 200kHz, the resonant frequency of energy receiving coil accepts, by 200kHz, the fundamental current magnetic field that triangular current is excited, and the resonant frequency of communication coil accepts, by 600kHz, the 3 subharmonic current magnetic fields that triangular current is excited.
The above is only the some embodiments of the present invention; it should be pointed out that, for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.

Claims (6)

1. a wireless power and the multiplex system coil layout method that communicates, this multiplex system includes countdown circuit, energy transmitting coil, energy receiving coil, communication antenna, wherein, described energy transmitting coil is under the effect of countdown circuit, there is provided wireless power energy for energy receiving coil, provide communication information energy for communication antenna simultaneously;Energy receiving coil accepts the fundamental signal energy in energy transmitting coil;Communication antenna accepts the harmonic signal energy in energy transmitting coil, it is characterized in that: the resonant frequency point of energy receiving coil is consistent with fundamental signal Frequency point in energy transmitting coil, the resonant frequency point of communication antenna is consistent with harmonic frequency signal point in energy transmitting coil;In space layout, the axis of communication coil is vertical with the tangent line of energy receiving coil, and energy receiving coil and communication coil are in approximately the same plane.
A kind of wireless power the most according to claim 1 and the multiplex system coil layout method that communicates, it is characterised in that: energy transmitting coil is sandwich wound coil.
A kind of wireless power the most according to claim 1 and the multiplex system coil layout method that communicates, it is characterised in that: energy transmitting coil is spiral winding.
A kind of wireless power the most according to claim 1 and the multiplex system coil layout method that communicates, it is characterised in that: energy acceptance coil is sandwich wound coil.
A kind of wireless power the most according to claim 1 and the multiplex system coil layout method that communicates, it is characterised in that: energy acceptance coil is spiral winding.
A kind of wireless power the most according to claim 1 and the multiplex system coil layout method that communicates, it is characterised in that: described energy transmitting coil, under the effect of countdown circuit, produces non-sinusoidal current ripple.
CN201610423366.9A 2016-06-15 2016-06-15 Layout method for coils of wireless power supply and communication multiplexing system Pending CN105978171A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610423366.9A CN105978171A (en) 2016-06-15 2016-06-15 Layout method for coils of wireless power supply and communication multiplexing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610423366.9A CN105978171A (en) 2016-06-15 2016-06-15 Layout method for coils of wireless power supply and communication multiplexing system

Publications (1)

Publication Number Publication Date
CN105978171A true CN105978171A (en) 2016-09-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610423366.9A Pending CN105978171A (en) 2016-06-15 2016-06-15 Layout method for coils of wireless power supply and communication multiplexing system

Country Status (1)

Country Link
CN (1) CN105978171A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106533512A (en) * 2016-11-04 2017-03-22 南京邮电大学 Multibit coding harmonic communication method based on triangulation rate modulation

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103308948A (en) * 2012-03-14 2013-09-18 索尼公司 Detecting apparatus, power receiving apparatus, power transmitting apparatus, and contactless power supply system
WO2015080539A1 (en) * 2013-12-01 2015-06-04 Lg Electronics Inc. Wireless power transfer method, apparatus and system
CN104779714A (en) * 2015-03-24 2015-07-15 南京邮电大学 High-speed wireless energy-carrying communication system
CN104838599A (en) * 2012-12-12 2015-08-12 高通股份有限公司 Resolving communications in a wireless power system with co-located transmitters

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103308948A (en) * 2012-03-14 2013-09-18 索尼公司 Detecting apparatus, power receiving apparatus, power transmitting apparatus, and contactless power supply system
CN104838599A (en) * 2012-12-12 2015-08-12 高通股份有限公司 Resolving communications in a wireless power system with co-located transmitters
WO2015080539A1 (en) * 2013-12-01 2015-06-04 Lg Electronics Inc. Wireless power transfer method, apparatus and system
CN104779714A (en) * 2015-03-24 2015-07-15 南京邮电大学 High-speed wireless energy-carrying communication system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106533512A (en) * 2016-11-04 2017-03-22 南京邮电大学 Multibit coding harmonic communication method based on triangulation rate modulation

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Application publication date: 20160928